Chemical modification of usnic acid 2. Reactions of (+)-usnic acid with amino acids
作者:O. A. Luzina、M. P. Polovinka、N. F. Salakhutdinov、G. A. Tolstikov
DOI:10.1007/s11172-007-0189-7
日期:2007.6
The condensation of amino acids with (+)-usnic acid involves the 2-positioned acetyl group of the latter and gives derivatives containing an enamine fragment.